> For the complete documentation index, see [llms.txt](https://docs.fwallet.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fwallet.net/app-fruits-wallet/security-lock/security-authentication/fingerprint-authentication.md).

# Fingerprint Authentication

* Condition: passcode is enabled, and the app allowed biometric authentication.
* To access the function, please follow the steps below.

**Step 1**

* The user touches the fingerprint sensor to authenticate.                                                                                                                                                                                                                                                                           ![](https://3885373335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FX7ySYFWpl8DCdr37E2NT%2Fuploads%2FMQEJQqRtlTlR6ODPy1kH%2Fimage.png?alt=media\&token=83a90e07-5cfe-4c9e-87d6-f48eaff7f154)

**Step 2**

* If the fingerprint is not correct, the warning "Not recognized" will be displayed. Users touch the fingerprint sensor to try again.                                                                                                                                                                                                                                                                                                           ![](https://3885373335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FX7ySYFWpl8DCdr37E2NT%2Fuploads%2F3EcwoszhFCKAAuomJMg1%2Fimage.png?alt=media\&token=ed8e2e38-9f4f-4d59-8f3f-d599038e225e)
* If the fingerprint is incorrect several times in a row, the fingerprint icon will be disabled and reopened after 1 minute. Users can only enter a passcode for authentication.                                                                                                          ![](https://3885373335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FX7ySYFWpl8DCdr37E2NT%2Fuploads%2FcX2Xq5xwIL3D2FhOv3Ay%2Fimage.png?alt=media\&token=15109b54-1edd-4ebf-8882-69559218c0be)

***Note:***

* Tap PIN, if users want to enter the passcode for authentication.                                                                                                           ![](https://3885373335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FX7ySYFWpl8DCdr37E2NT%2Fuploads%2FscEdftTezVQ7iKen3ywI%2Fimage.png?alt=media\&token=6e179f07-87d8-44dc-a658-47d1f67a96a8)
* Tap the fingerprint icon, if users want to use fingerprint for authentication (by default).                                                                                                           ![](https://3885373335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FX7ySYFWpl8DCdr37E2NT%2Fuploads%2FyAayKOtbjbjdPYgkhbzt%2Fimage.png?alt=media\&token=4fe97ee6-1ee8-49cc-8952-45d86802cee7)